Teacher's edition.

• Author: Rebhun, Elliott

We rarely put an animal on the cover, but anthropologist John C. Mitani's Op-Ed on the fate of apes got our attention: Only five kinds of apes remain in the world, and poaching and habitat destruction in Africa and Asia have put them on the road to extinction. Will humans let our closest animal relatives die out?

With the Iowa caucuses and the New Hampshire primary just a few weeks away, Upfront spends a day on the campaign trail with Republican presidential hopeful Jon Huntsman. In these first two critical contests, the candidates campaign the old-fashioned way: by meeting people one at a time, shaking hands, and in Huntsman's case, hanging out with their goats. We also look at the outsize role Iowa and New Hampshire--small states that in many ways are very different from the nation as a whole--play in presidential elections.

The Occupy Wall Street and Tea Party movements could play a big role in the...